Global Patent Index - EP 1991798 A2

EP 1991798 A2 20081119 - OIL BATH ENCODER SEAL

Title (en)

OIL BATH ENCODER SEAL

Title (de)

√ĖLBADKODIERERDICHTUNG

Title (fr)

JOINT DE CODAGE DE BAIN D'HUILE

Publication

EP 1991798 A2 20081119 (EN)

Application

EP 07758131 A 20070308

Priority

  • US 2007063549 W 20070308
  • US 37140506 A 20060309

Abstract (en)

[origin: WO2007104002A2] An oil lubricated rotating hub (14) and stationary spindle (12) assembly includes an oil bath seal (16, 16') for establishing a dynamic sealing interface between the hub (14) and spindle (12). A wheel speed sensor assembly includes a variable reluctance sensor (54) targeted at an encoder ring (56, 56') which is integrated into the oil bath seal (16, 16')- The encoder ring (56, 56') is of the permanent magnet type including a plurality of magnetically polarized sectors alternating between North and South polarities. The use of an encoder ring style target (56, 56') in combination with a variable reluctance sensor (54) enables improved slow speed sensing with relatively large air gap spacings between the exposed face (58, 58') of the encoder ring (56, 56') and the head of the VR sensor (54). Furthermore, the encoder ring (56, 56') enables use of less expensive, lighter materials for the oil bath seal carrier (20, 20').

IPC 8 full level

F16C 32/00 (2006.01); F16C 33/76 (2006.01); F16C 41/00 (2006.01)

CPC (source: EP)

F16J 15/326 (2013.01); G01P 3/443 (2013.01); G01P 3/487 (2013.01); F16C 33/76 (2013.01); F16C 41/007 (2013.01); F16C 2326/02 (2013.01)

Designated contracting state (EPC)

DE FR IT

Designated extension state (EPC)

AL BA HR MK RS

DOCDB simple family (publication)

WO 2007104002 A2 20070913; WO 2007104002 A3 20080807; BR PI0708655 A2 20110607; CN 101443567 A 20090527; CN 101443567 B 20120229; EP 1991798 A2 20081119; EP 1991798 A4 20100414; JP 2009529679 A 20090820; JP 2013036614 A 20130221; JP 5094744 B2 20121212; KR 20080100289 A 20081114; US 2007211974 A1 20070913; US 7455459 B2 20081125; ZA 200807998 B 20090826

DOCDB simple family (application)

US 2007063549 W 20070308; BR PI0708655 A 20070308; CN 200780016933 A 20070308; EP 07758131 A 20070308; JP 2008558529 A 20070308; JP 2012179535 A 20120813; KR 20087024616 A 20081008; US 37140506 A 20060309; ZA 200807998 A 20080917